The Cambria freeman. [volume] (Ebensburg, Pa.) 1867-1938, 1887-11-18
SCIENTIFIC.

i
relieves the pain, and IS especially val
liable in deep seated wounds.
AocoRDING to late papers by Professors
Julien and Bolten, sonorous beach sands
are lar from being rarities as they were.
considered some years ago, as thoy arc
already found IN seventy four American
and thirteen foreign localities and the
number Is constantly increasing. When
suddenly compressed between the hands,
musical notes are emitted by lese sands,
the pitch rising as the quantity is dih1in-
ished.
CAST IRON pulleys can be lagged or
faced with leather, without the use Of
rivets in the following manner; First
brush ovor the face ot the pulley. with
acetic acid, which viii in a short time
rust It and give 1t very rough surface ;
then attach the leather 10 the face OF
the pulley with a cement composed Of
one pound OF fish glue and one-half
pound OF common glue cooked in alcohol
and water.
TIE diameter of trees il said to vary
not only from Summer to Winter, but
from day TO day. There are larger from
noon till twilight the next morning than
from twilight until noon; they are small
er in Winter than in summon. Water
and the sap OF trees expand not only in
proportion as they rise above, but also as
they 20 below the freezing point. Low
Temperature as well rs high promotes
evaporation, and the trees evaporate
from their branches in Winter, and 30
the colder the weather tho moro they
shrink.
a WASH Of one part OF nitric acid In ten
parts OF water WILL II ls said, iInpart q
stain resembling mahogany TO pine wood
that does not contain much resin. When
the wood is thoroughly dry shelac varnish
Will lmpart a fine finish to the surface
y glaze OF Carmlne or lake Will produce u
rosewood finish 4 turpentine extract of
alkanet root produces a beautiful stain
which admits OF French polishing AS
phaltum, thiHned with turpentine, makes
an excellent mahogany color on new
wood.
PEoFEssoE Thompson, in a recent leo
ture, informed his audience that the mag
netic polo X now near Bcothia Felix, or
moro than 1000 miles west Of the geo
graphical pole. IN 1857 the magnetic
pole was due north it having been east
ward before thst year. IheIs II began to
move westward until lSlG, whom the
maximum WIS reached. This Is nov be-
ing steadily diminished, and IN I97Git
VIII sgain point due north. Professor
Thompson says chat the changes which
will have been Observed not only ia tho
direction, but in tho strength Of the earth's
magnetism, viii show that the Same causes
still at work.
The odoriferous molecule OF musk
must DO iucomprehensibly small, when
we ara told the particles one grain OF
musk had, in = radius OF ninety feet dis
engaged II one day. No microscopicsls
power has Yet been conceived to enable
the human eye 10 see one OF these StOms
vet the ORGANS of smell have the sensi-
tiveness to detect them. We cannot i'm
#h...a -.~.hf, ii
the same grain OF musk undergOes absol-
utely no dImirution in weight. 4 single
drop OF the OIL OF thyme, ground down
with piece Of sugar ana a little alcohol
VIII communicate its odor to Twenty-Five
gallons OF water. Halier kept for forty
years papers perfumed with ono grain Of
amborgris. After this time the odor Was
a. strong as ever. Bordcnave has eval-
uated Z unolecule OF camphor sensible 10
tho 5lnoll to 2,262, ,584,U00 OF a grain.
BOYLE has observed that one draehm Of
assafo.tlda exposed TO the open air had
lost Ia six days the eighth part Of one
grain, from which Keill concludes that
in one minute it had lost 6y,l20th Of q
grain.
a "oSE third silver alloy Is much en-
ployed in the factories OF Paris for the
manufacture OF silvcrware. Il consists Of
ono third OF silver and two thirds Of alum
inum, and is worked 10 great advantage
by reason Of its low price and its great
hardness. Il is moro easily pressed and
engraved than silver copper ALLOYS An
alloy of 100 parts OF aluminium and five
parts OF silver differs but little from pure
aluminium, Yet it Is far harder and IS
capable Oi assuming a higher polish. An
alloy consisting OF lO9 parts OF aluminium
and five parts OF silver possesses very
remarkable degree OF elasticity, and has,
therefore, beon recommended for tho
rfsa.ss .,F I,1, Z
watches. An alloy of equal parts Of
aluminium and silver rivals bronze In
hardness.
.THE phenomenon OF twilight Is due
partly 70 refractiOn and partly 10 reaec-
ton, bat chiefly to the latter. After sun
set tho sun still continues 70 shine on the
clouds and upper strata OF the air, just as
II may 10 shining on the SUBMITS OF
lofty mountains long after II has disap-
peared from the view OF the dwellcrs on
the plains. The air and clouds thus illum-
inated reflect back part OF the light % the
surface boneath them, and so produce
what we call twilight Immediately after
sunset the clouds are SO highly illunin-
atcd as 70 be able 10 reflect an amount Of
light but little inferior TO the direct light
OF the sun. as the sun sinks lower, less
and lcas OF the visible atmosphere re-
ceives its light, and so less and less is re-
hected, until a length reflection ceases
ana nSnt cnSucS.
A PArERNAKISo firm in New Jersey
has Tor several weeks been turning out
counterpanes and pillows OF paper. No
! nanilla paper is used, two large sheets
being hold together by a slender twine at
intervals OF three or four inches The
twine Is gummed, 80 as TO hold the sheets
firmly together where 1t lies. A hem is
| placed on the counterpsne % keep-it
| IRON tearing thesafoty edge is composed
| oftwine. Ornamental designs are stamped
on the outer surfaces OF the covers and
caSos, giving them a neat, attractive sp-
! pegrancc. When these countcrpsnes
/ and pillow-cases become wrinkled from
use they can easily be srnoothei ont
with a bot hatron. The couBtcrpAn05
| can be left on the bed when il is occu-
/ pied, ana in cold weather will be found a
! warm covering, paper preventing the
! escape OF heat- The new paper bedcloth-
! ing is - cents per set and viii probably
become popular.
SoNE Interesting particulars arc given
! by NJ Escallo, director OF the important
works al Iamaris; in regard to the employ.
ment OF BLOCKS OF compressed coas, in lieu
I OF coke. for blast furnaces. With the
/ ores of the country, which are argilo-
silicious and small, the quantity Of COM
pressed fuel employed is 20 per cent. but
with those oil Motka or Pilian it reaches
regularly 80 per cent. II has been iouud
/ that by tlze OF these blocks much higher
temperature OF hot blast is obtained and
that the proportion OF combustible con-
sumed-coke and compressed coal in
| cluded-per ton OF pig-iron produced is
/ less than with coke alone. NJ Escalle
attributes this result TO the quantity Of